A Study of High Energy Nuclear Interactions with Large Emulsion Cloud Chamber

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概要

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• A large emulsion cloud chamber (E.C.C.) carried by a balloon was exposed at high altitude (October,1963,Kobe). The characteristics of the interactions of high energy cosmic ray particles (>__〜10^<13>eV) with other nuclei were examined. Forty-two events with energies higher than 10^<12>eV were observed, from which the events of nuclear interactions in the carbon producer were selected. The transverse momenta of γ-rays which were the decay products of π°-mesons emitted from jets were estimated at 230MeV/c (assuming that the P_t distribution of γ-ray resembles that of π°'s, and the average P_t value of π° is about twice that of γ). The curve of P_t distribution does not fit the Gaussian form. In the energy region of about 10^<12>eV, the energy spectrum can be fit by single power laws of 1.50±O.42 for ΣE_y, and 1.60±0.25 for E_y. There is no correlation between P_i and E_y.

• 1966-01-05

著者

• Maeda Yasuko

  Department Of Physics Kobe University

関連論文

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